Interesting since yer talking about it. I just bought 35 feet of 1/0 from welding supply near Orlando. 3.75/ft. Way cheaper and all black. Pure copper very thin strands and it has temperature level on jacket. 600amps allowed. Bought copper rings and hammer style crimps device from them too! Doing big three now and don't know whether to fuse or not b/w alt and bat.?